IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Upper-Crustal Anisotropy of the Conjugate Strike-Slip Fault Zone in Central Tibet Analyzed Using Local Earthquakes and Shear-Wave Splitting
Wu, Chenglong3; Tian, Xiaobo1,3; Xu, Tao1,3; Liang, Xiaofeng3; Chen, Yun3; Zhu, Gaohua4; Badal, Jose5; Bai, Zhiming3; Yu, Guiping2,3; Teng, Jiwen3
2019-10-01
Source PublicationBULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
ISSN0037-1106
Volume109Issue:5Pages:1968-1984
AbstractRemarkable V-shaped conjugate strike-slip faults extend along the Bangong-Nujiang suture in central Tibet. Motions of these faults are considered to accommodate ongoing east-west extension and north-south contraction. Fabrics within the fault zone that are anisotropic to seismic waves can provide clues as to the unusual scale and style of lithospheric deformation. With the goal of determining the upper-crustal anisotropy pattern in central Tibet, we measured shear-wave splitting parameters (fast wave polarization direction and delay time) using waveforms generated by 194 local earthquakes recorded by 49 stations of the SANDWICH network. Stations located in eastern and western zones of the study area show anisotropy directions that agree well with the maximum horizontal compressive stress direction. The fast polarization directions at stations near active strike-slip faults generally run parallel to the strikes of these faults. Pervasive inactive thrust faults caused by Cretaceous-Tertiary shortening in central Tibet also clearly correlate with the anisotropy detected at nearby stations. These results demonstrate that both local structures and stress contribute to upper-crustal anisotropy in the region. Combining the new results with previous SKS-wave splitting results and other seismic evidence, we propose that deformation in the upper crust is mechanically decoupled from that in the upper mantle, due to eastward middle-lower crustal flow. This crustal flow causes basal shearing required for the formation of conjugate strike-slip faults in central Tibet.
DOI10.1785/0120180333
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordSAN-ANDREAS FAULT ; EAST-WEST EXTENSION ; SEISMIC ANISOTROPY ; SOUTHERN TIBET ; UPPER-MANTLE ; VELOCITY ANISOTROPY ; SYSTEMATIC ANALYSIS ; SHALLOW CRUST ; CENTRAL-ASIA ; BENEATH
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFC0600301] ; National Key Research and Development Program of China[2016YFC0600302] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0701] ; National Natural Science Foundation of China[41804058] ; National Natural Science Foundation of China[41674064] ; National Natural Science Foundation of China[41704042] ; National Natural Science Foundation of China[41574082] ; National Natural Science Foundation of China[41522401] ; National Natural Science Foundation of China[41474068] ; National Natural Science Foundation of China[41574056]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000487813300027
PublisherSEISMOLOGICAL SOC AMER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93708
Collection岩石圈演化国家重点实验室
Corresponding AuthorWu, Chenglong
Affiliation1.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Chinese Univ Hong Kong, Fac Sci, Earth Syst Sci Programme, Sha Tin, Hong Kong 999077, Peoples R China
5.Univ Zaragoza, Phys Earth Sci B, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
First Author AffilicationState Key Laboratory of Lithospheric Evolution
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution
Recommended Citation
GB/T 7714
Wu, Chenglong,Tian, Xiaobo,Xu, Tao,et al. Upper-Crustal Anisotropy of the Conjugate Strike-Slip Fault Zone in Central Tibet Analyzed Using Local Earthquakes and Shear-Wave Splitting[J]. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,2019,109(5):1968-1984.
APA Wu, Chenglong.,Tian, Xiaobo.,Xu, Tao.,Liang, Xiaofeng.,Chen, Yun.,...&Teng, Jiwen.(2019).Upper-Crustal Anisotropy of the Conjugate Strike-Slip Fault Zone in Central Tibet Analyzed Using Local Earthquakes and Shear-Wave Splitting.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,109(5),1968-1984.
MLA Wu, Chenglong,et al."Upper-Crustal Anisotropy of the Conjugate Strike-Slip Fault Zone in Central Tibet Analyzed Using Local Earthquakes and Shear-Wave Splitting".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 109.5(2019):1968-1984.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, Chenglong]'s Articles
[Tian, Xiaobo]'s Articles
[Xu, Tao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Chenglong]'s Articles
[Tian, Xiaobo]'s Articles
[Xu, Tao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Chenglong]'s Articles
[Tian, Xiaobo]'s Articles
[Xu, Tao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.